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http://hdl.handle.net/10603/24939

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dc.coverage.spatial

crystal growth

en_US

dc.date.accessioned

2014-09-11T12:17:05Z

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dc.date.available

2014-09-11T12:17:05Z

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dc.date.issued

2014-09-11

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dc.identifier.uri

http://hdl.handle.net/10603/24939

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dc.description.abstract

newlineBiomaterials are used to make devices to replace part of a living
newlinesystem or to function in intimate contact with living tissue without being
newlinerejected by the body It has used every day in biomedical applications such as
newlinehard tissue replacement facial surgery and drug delivery In general
newlinebiomaterials are classified into four major groups metals polymers ceramics
newlineand composites Bioceramics has found applications for replacing several
newlineparts of our body such as hip knee ankle elbow and other joint damages
newlinewith subsequent limited basic activities Bone is a complex living tissue
newlinewhich has elegant structures at a range of different hierarchical scales It is a
newlinecomposite of organic and inorganic materials which forms the basis of the
newlineskeleton and its functions are numerous and complex The organic compound
newlineis composed mainly of type I collagen fibers and occupy 3035 of bone by
newlineweight The inorganic portion of bone is calcium phosphate compound which
newlinehas 6570 hydroxyapatite HAp HApbased ceramic is the main inorganic
newlinecomponent of hard tissues like bone and dental reparation and also for the
newlineapplications in drug delivery systems
newlineOsteosarcoma is one of the bone tumors which can be remedied by
newlineusing magnetic nanoparticles Magnetic nanoparticles are subjected to
newlineoscillating magnetic field that absorbs energy from the electromagnetic wave
newlineand may show remarkable heating effects The temperature can be maintained
newlinein a cancerous tissue within the range of 42 46 C for 30 min or more thus
newlinecancer cells are destroyed Substitution of Ca2 in HAp by magnetic ions or
newlinemetal ions could be useful for biological applications such as magnetic
newlineresonance imaging MRI cell separation targeted drug delivery and heat
newlinemediator for the hyperthermia treatment of cancer
newlineSurface modification through ion irradiation is an important tool for
newlinethe ceramic materials also to improve the bulk properties and sterilization
newlineThe irradiation method enables us to modify the chemistry of HA p in a
newlinereproducible way so as to optimize the bone
newline
newline